- Mar 1 Hiram Bronson Granbury, Brigadier General (Confederate Army), (d. 1864)
- Mar 3 George Pullman, American industrialist and inventor (railway sleeping car), born in Brockton, New York (d. 1897)
- Mar 6 Friedrich von Bodelschwingh, German theologist (founded institutions, including a bank, to help the poor), born in Tecklenburg (d. 1910)
- Mar 6 Philip Sheridan, American general (fought Civil War for Union army, helped preserve Yellowstone Park), born in Albany, New York (d. 1888)
- Mar 7 John Bratton [Old Reliable], American physician and Brigadier-General (Confederate Army), born in Winnsboro, South Carolina (d. 1898)
- Mar 12 Clement Studebaker, American manufacturer (horse-drawn vehicles, later made early automobiles), born in East Berlin, Pennsylvania (d. 1901)
- Mar 14 Leon Leopold Lewandoski, Polish composer, born in Kalisz, Poland (d. 1896)
- Mar 15 Daniel Comboni, Italian missionary (d. 1881)
- Mar 15 Edward Aylesworth Perry, American soldier and politician (General under Lee for Confederate Army, 14th Governor of Florida 1885-89), born in Richmond, Massachusetts (d. 1889)
- Mar 20 Solomon L. Spink, U.S. Congressman (d. 1881)
- Mar 23 Eduard Schlagintweit, German writer (d. 1866)
- Mar 29 Amelia E. Barr, British-born American writer, born in Ulverston, Lancashire (d. 1919)
- Mar 31 Archibald Scott Couper, Scottish chemist (advances in chemical theory including bonding of carbon atoms), born in Kirkintilloch, Scotland (d. 1892)